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ECAT Mathematics Chapter 23 Pre Engineering Online Test MCQs With Answers

Question # 1

If G is the centroid of the triangle, then GA +GB+GC=

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-1

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Question # 2

The positive real number which is the measure of the length of a vector is called the

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Unit vector

Modulus

Inverse

None of these

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Question # 3

O (0,0)is called:

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Position vector

Free vector

Unite vector

Null vector

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Question # 4

If the angle between two vectors u and v is 0 orπ, then the vectors u and v are:

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Orthogonal

Collinear

Perpendicular

None of these

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Question # 5

If a≠ , b≠ 0 and|a=b|=|a-b|,then vectors a and b are:

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Parallel to each other

Perpendicular to each other

Inclined at 60^o

neither parallel nor perpendicular

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Question # 6

If the sum of two unit vectors is a unit vector the the magnitude of their difference is

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√2

√3

None of these

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Question # 7

If a,b = 0 then

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a |b

a||b

a = b

None

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Question # 8

The angle between the vectors u = [-3 , 5] and v = [6 , -2] is:

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π/2

-3π/2

None of these

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Question # 9

If the angle between two vectors u and v is 0 orπ, then the vectors u and v are:

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Orthogonal

Collinear

Perpendicular

None of these

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Question # 10

If aand bare two vectors then a+b =

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b + a

b - a

a^ b

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Question # 11

a ______quantity is one that possesses both magnitude and direction.

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Scalar

Vector

Segment

None of these

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